Ignition-dynamo.



C. T. MASON. IGNITION DYNAMO. APPLICATION FILED JULY 28, 1913.

Patented July 31 1917.

is a specifieuriou, reierence her;

7 any Way elem:

new

IGETITEGN-DYBTAI EG.

signification filezl July 25 3813.

lhraunns THOMAS United Staies, 1o ounty of Suiriter have invented oerovements in -e certain new l mtion-Dynamos, o

1 n 11 n which the following had to the iner L r may ces of current, such cry to directcurrent an al rnatiug curhero.

y objects to do a 'iliary and enahle the generaigs to used instead of battery to eliminate the necessity for re- J e poles or 2718 ittery to avoid deiaiiori of the and to reuniiossihle for battery current in magn to; as well as oher o iecr-s which will sun'iciently appear from description and claims herein er.-

I atiuiii my objects by employing a type i niagneio machine ha ing an armature structure with generating coil fixed with n to the rotor, and making said coil '"ii-oetechahle use 5 the accoml'igures are the combic. system V. ,strueiiou o r mechanism,

Specification. Letters Eeteui,

from the namo longing my sysiem sees the h lm Oz.

nezie circuit.

To render clear the advsncaees of my invention, it is necessary to rerer briefly to the prior art wherein systems employing "two sources of current are well known and have been commonly termed dual, duplex,

or double systems. In some of these, two separate sets of spark plugs are employed, one set each for the dynamo and battery, with suitable switches whereby one or the other or both sets of plugs may be employed. This is usually termed the ii1(i6311i8}1t system and the complication is obvious. il herehowever, a single spark plug is em ployed for both sources of current which are alternately connected at will, a so-called dual system results, in which separate disiributers, battery coils, etc.- must be emplo ed.

With either of the above mentioned systems, or any other in which two sources of current are employed, either a separate coil for the battery is used, or Where the Windings of the dynamo are employed instead of the coil, it is necessary to reverse the betlen switch, and usually a separace inter rupter distinct-from that employed in the dynamo circuit. The switch and] interrupter coil. are usually combined in one elemeni which it is customary in case of auto,- mooil-es to mount on the dash. This necessirates Wiringbetween the hosiery, the dynamo, and the switch, which I eliminate.

itis obvious thac should this Wiring he reversed so that the battery current is permitted to how through the dynamo wiridings in a reverse direction, thai the operaiQIlOZi of the dynamo would he seriously affooted. i eliminate this danger-by so arhosiery connec sion makes no difie employ 118 interrupter for both hair-er a-nism employedio remove the generatdynamo, and so position the switch that it forms a unit with the dynamo itself.

In the figures, 1 and 2 represent the sides .of an armature structure which is sub-' jected to alternating reversals of magnetic flux due to the. rotation within the structure of the rotor 3 and 4. These parts represent in theory current dynamo of the inductor type. In such machines permanent field magnets are commonly employed, and for the sake of illustration it will be presumed that the ro-- tors 3 and 4 are of permanent opposite polarity as in the ignition dynamo disclosed in my application for Letters Patent Serial No. 432,681 of November 21, 1912. It will.

be understood that any form of alternating current dynamo having an armature structure, carrying windings maybe employed.

he core 5 connecting the members 1 and 2 when in the position shown in Fig. 2,- forms part .of the magnetic circuit of the armature structure. This core is movably mounted in any suitable manner. so that it can be swung outward as illustrated in Fig. 1, thereby removing the windings from the magnetic circuit of the field structure. Upon this movable core 5 are placed suitable generating windings 6 and 7 in the case ofa so-called high tension machine, although it is obvious that, one or any number of.

windings may be employed. In the regular form of high tension machine winding 6 is the primary winding, and Winding 7 the secondary or high tension winding. One end of each winding is connected to the core or frame of the machine.

of the high tension winding isconnected interrupter contacts to the spark plug 8, while .the other end?) of the primary winding is connectedto'one contact member 10. ofthe battery switch,

to one side of the condenser'll, and to one member of the interrupter mechanism 12. This interrupter mechanism is of any type,

the cam 13 usually being carried on the rotor shaft of the generator, and being ofsuch form that it alternately opens and closes termittently short-circuiting the winding of the coil. the short-circuit'is so timed that it takes primary place in synchronism with the passing of.

the maximum magnetic flux through the field structure. A spark is thereby. produced at )lug 8 as well understood.

lin the case of an engine having a number of cylinders, a suitable distributing device is placed in the wire leading from the-winding "7, so'that the high tension current is successively. connected to the-plugs ofthe different cylinders. Such a modification is well known and obvious,

One side of thebattery'15 is connected to the frame ofthe machine, or grounded,

while the other side is connected to contact any form of alternating and at the same time by The remaining end l2 and ll, thereby in-' The removal of 'myinvention consists broadl 16 of the battery 2, when. the dynamo is employed as the source of current, the battery switch contacts l0 and 16 are opened and the core 5 carrying the generating windings is in position to complete the path for the magnetic flux, and consequently electromotive force is induced in' one windings. 7

When it is desired to employ the battery, as for instance when starting the engine, by means of any suitable mechanism such as the crank 17 which is equipped with a cam 18, the switch contacts lO and llare closed, any suitable means such asthe crank 19 and rod 20, piece 5 can rying the generator windings I isrcmoved .or separated fromthe members. 1 and 2 of the armature structure, thereby removing the-generating windings from the magnetic circuit. It will now be seen that current will fioW from'the battery 15 over conductor 21 through switch contacts 16 and 10, to the conductor 9, through the primary winding 6 to the frame of the from thence to the opposite side of the battery, the interrupter contacts 12 and 14 being open. As the rotor shaft revolves, interrupter-contacts l2 and 1 1- are. closed by cam 13, thereby short-circuiting the battery and winding 6. The rotor continuing to revolve, the interrupter contacts 12 and 14 are opened intermittently, thereby producing sparks at the plug 8 as required.

Since the generator windings are removed from the magnetic circuit of the dynamo, they do not when energized from the battery influencethe. field magnets in any way, and therefore the polarity of the battery 15 connected to the windings is immaterial. F urthermore, the factthat the dynamo is running does not effect the induction of current in the windings from the battery source for there is no current induced in the windings as a result of the revolution of the rotor. It is of course understood that any other source of current 15 may be employed insstead of the battery.

. I prefer to mount switch contacts 10 and 16 on the dynamo whereby machine, and

they form a part.

switch. As shown in Fig.

or both of the generating of same and adjust them by any suitable meanssimultaneously with the adjustment of the coil carrying member fi. When-this is done, .there is no wiring except wiires 2l and 22 from the battery. These wires may be connected without regard to the polarity thereof. The handle or" 17 may be mounted on the dashboard, and operates the entire system. No other apparatus on the dash board is required.

From the foregoing it will be seen that the generating windings from the magnetic circuit of an ignition dynamo,' so that the P g voi curr nt tarnis 1 .9 said "Wind y in removing it will he readiiy understooii ings wi l not affect the magnetization of the fieio' magnets of the ciynanio, and arranging means for connecting and disconnecting buttery current to said windings, said means to opera-ted simultaneously with the re movai or the windings irorn the magnetic circuit. This eliminates the necessity for a niultipiicity of Wlf-BS, a number of switch contacts, two interrupters and other complications-h retofore necessary, reciueing the parts. to the fewest possihie number, and Wiring to a minimum.

i Vhile I have shown the generating Winding as bodily removable from the {i at any means "action of the magnetic circuit or the clyemail that the action of the gener niagrj'ieticeiiy upon the same,

ranged to apply eitnerineans of anti field on each other is neglig hi pieces 1 and '2 may he on otirna made solid, the core o'i'ireci one short eircuiting yoke 23 employer so placed that the path for, flux between pores 1 and 2 of the armature structure Wili iie through yoke 23 instead of 5, thereby removing the windings from the influence oi the rotor 3 and Such modifications as these i deem within the scope of invention. I am aware that control or" the magnetic circuit in dynamos has been atternpteci heretofore, but usually such means as auxiliary windings, intermediate polar eaten sions, and other electrical means have been employed to do electrically What i do, meclianicaliy with much less complication, and While some "attempt to vary mechanically the relation of the windings to tiie magnetic;

circuit has been attempted in motors to regulate the speed, I am not aware that this:

principle has been applied to ignition Lita.

nanios forniy purpose, or any other.

Having thus described my invention, What I claim and desire tors Patent. is 1. An ignition system." internal conibustionengines comprising a generating Winding, ancl two .means of excitation ariapted' to produce current in said. generatingwintling, one of means acting eiec 6G tricaiiy on the Winding and the other-acting together with means a excitation to the generating Winding and siniuitaneousiy remove the to secure by Let- An ignition system for internai coinuistion engines comprising an induction coil having a primary inducing Winding and a secondary r di g a dynamo fieici structure an "fiery each adapt- OCl to direct itation of the I W the seci ring means arranged to i said piniary Winding so as to be exciteci from said battery or from said dynamo fielcl1 structure at will.

An ignitions an for internal conihustiou engines comprising a generating Winding, and two sources of excitation for said Wincling one e 'iich isa dynamo field structure by means of 'u'hich' saici genera? ing coil may be normally excited, means to connect coil with the other source for excitation, together with associated-insane to simultaneously reduce the permeability of the magnetic circuit of said dynamo fielal structure whereby the dynamo field is unaffected 'hy excitation of said generating Winding from said other source, and vice 4. An i nition system comprising a (i h name, an .inciuction coil included in t e magnetic circuit of. said dynamo, means Whereby said coil may be placed in nongeneratiug relation to said magnetic'circuit, a make anti break for the primary of said. coii, a concienser oonnectecl to said malre and. break device, a source or" current, anti ineans Wherehy said source of current may be connected to said induction coil.

5. in an ignition system, a dynamo having an induction coil forming the generating Winding thereof, scans "for clisassociat ing said coil from the magnetic circuit of said dynamo, source of current, a make and break device, a, condenser, connectioi'is extending from source of current, make and break (l -ic'5,filli condenser, and means whereby source of current. niay be con necteci to said coil. i

6. An ignition system comprising'a magneto generator having generating windings removeiiiy inciuclecl in its niagneticcircuit,

a source of current, interrupter mechanism coinuurzi to said source of current and saicl magneto. and means operates by a common handle for removing said windings fromthe magnetic circuit and connecting sairi source of current to said windings.

the magnetic circuit of said dynamo and operating said switch mechanism to connect said source of current to said windings.

8. In an ignition system, a generating coil having primary and secondary windings and an iron core, a separate source of ma netism, means for directing flux therefrom through said core, means for varying the same to produce variable electromotive forces in the primary and secondary windings, a "battery, and means for removing the core from the influence of saidflux directing means, magnetizing the same by 'means of battery current through-the pri- I bustion engines comprising an ignition dynamo havlng an induction coil the primary of which constitutes a generating Winding and is normally subject to the influence of themagnetic field of the dynamo, a battery adapted to be connected with said primary winding to excite the same but normally disconnected therefrom, means to connect the batterywith said winding and simultaneously remove said winding from the infiu-' ence of the dynamo field.-

11. A dynamo stru-cturefo-r ignition systoms mcluding generating windings, a sepa- "windings, an interrupter in circuit with the rate and independent source of current, and means for connecting at will said separate and independent source of current to the generating through ignition current.

12.' A dynamo structure for ignition sys- .tems including primary and secondary primary windings, a separate and independent source of current, and means for con-' meeting at w1ll sa1d separate and 1ndepend ent source' of current with said primary winding and interrupter for: furnishing through the secondary windmg ign tion current. I

windings for furnishing there 13. A dynamo structure for ignition systems, including primary and secondary through the secondary winding of said dynamo ignition current.

14. A dynamo structure for ignltlon systems comprising field magnets, a rotor, gen- I crating windings, and a switch adapted to connect an outside circuit with said windings, in combination with mechanical actuating means for said switch extending to and operable from a' point removed from the dynamo.

15. A dynamo structure for ignition systems comprising field magnets, a rotor, generating windings, and a switch adapted to connect an outside circuit with said windings, in combination with mechanical actuating means for said switch extending to and operable f pm a point removed from the dynamo, said rotor comprising permanently polarized elements constituting movable extensions of the field magnet poles, and said generating windings being normally fixed in relation to the rotor.

16. A dynamo structure for ignition systems comprising field magnets, a rotor, generating windings, and a switch adapted to connect an outside circuit with said windings, in combination with mechanical actuating means for sa1d swltch extending to and operable from a point removed, from the dynamo, said-rotor comprising permanently polarized elements constitutingmow.

able extensions of the field magnet poles,

and said generating windings being normally fixed in relation to the rotor, but

having secondary pole pieces adjustable around the axis of the rotor for purposes of timing.

In testimony whereof I hereunto affix my signature in the presence of two witnesses.

" CHARLES THOMAS MASON.

Witnesses:

F. C. MANNING, H. R. VAN DEVENTER. 

